EP0415236A3 - Optical unit for use in laser beam printer or the like - Google Patents

Optical unit for use in laser beam printer or the like Download PDF

Info

Publication number
EP0415236A3
EP0415236A3 EP19900116002 EP90116002A EP0415236A3 EP 0415236 A3 EP0415236 A3 EP 0415236A3 EP 19900116002 EP19900116002 EP 19900116002 EP 90116002 A EP90116002 A EP 90116002A EP 0415236 A3 EP0415236 A3 EP 0415236A3
Authority
EP
European Patent Office
Prior art keywords
laser beam
optical unit
beam printer
printer
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19900116002
Other versions
EP0415236A2 (en
EP0415236B1 (en
Inventor
Takashi C/O Intellectual Property Div. Shiraishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of EP0415236A2 publication Critical patent/EP0415236A2/en
Publication of EP0415236A3 publication Critical patent/EP0415236A3/en
Application granted granted Critical
Publication of EP0415236B1 publication Critical patent/EP0415236B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/113—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors
    • H04N1/1135—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors for the main-scan only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/47—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light
    • B41J2/471—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light using dot sequential main scanning by means of a light deflector, e.g. a rotating polygonal mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Lenses (AREA)
EP90116002A 1989-08-31 1990-08-21 Optical unit for use in laser beam printer or the like Expired - Lifetime EP0415236B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1225448A JP2928552B2 (en) 1989-08-31 1989-08-31 Scanning optical device
JP225448/89 1989-08-31

Publications (3)

Publication Number Publication Date
EP0415236A2 EP0415236A2 (en) 1991-03-06
EP0415236A3 true EP0415236A3 (en) 1991-11-06
EP0415236B1 EP0415236B1 (en) 1995-01-11

Family

ID=16829514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90116002A Expired - Lifetime EP0415236B1 (en) 1989-08-31 1990-08-21 Optical unit for use in laser beam printer or the like

Country Status (4)

Country Link
US (1) US5064260A (en)
EP (1) EP0415236B1 (en)
JP (1) JP2928552B2 (en)
DE (1) DE69015925T2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301060A (en) * 1989-11-30 1994-04-05 Minolta Camera Kabushiki Kaisha Optical element
JPH03293662A (en) * 1990-04-12 1991-12-25 Fuji Photo Film Co Ltd Silver halide color photographic sensitive material
US5227811A (en) * 1991-02-27 1993-07-13 Minolta Camera Kabushiki Kaisha Baseplate for an optical scanning device
JP3072146B2 (en) * 1991-03-05 2000-07-31 旭光学工業株式会社 Anamorphic optical system
JPH05346549A (en) * 1992-04-17 1993-12-27 Canon Inc Scanning optical device
US5450211A (en) * 1993-06-29 1995-09-12 Minolta Camera Kabushiki Kaisha Image forming apparatus and method for maintaining set magnification not withstanding changes in optical system due to temperature change
US5648865A (en) * 1993-12-27 1997-07-15 Asahi Kogaku Kogyo Kabushiki Kaisha Scanning optical system
JPH08234125A (en) * 1995-02-23 1996-09-13 Seiko Epson Corp Optical scanner
US5841464A (en) * 1995-10-25 1998-11-24 Gerber Scientific Products, Inc. Apparatus and method for making graphic products by laser thermal transfer
US5877883A (en) * 1996-02-22 1999-03-02 Seiko Epson Corporation Optical scanner
US6919997B2 (en) 2002-07-24 2005-07-19 Heidelberger Druckmaschinen Ag Compact device for imaging a printing form
JP2009058677A (en) * 2007-08-30 2009-03-19 Ricoh Co Ltd Optical scanner and image forming apparatus
JP2011258704A (en) * 2010-06-08 2011-12-22 Fujitsu Optical Components Ltd Optical device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3228221A1 (en) * 1981-07-28 1983-04-14 Sharp K.K., Osaka DEVICE FOR RECORDING THE INFORMATION CONTENT OF AN ELECTRICAL SIGNAL ON THE SURFACE OF A LIGHT-SENSITIVE MEDIUM
DE3445342A1 (en) * 1983-12-12 1985-06-20 Asahi Kogaku Kogyo K.K., Tokio/Tokyo Laser beam exposing system
US4786151A (en) * 1987-01-12 1988-11-22 Minolta Camera Kabushiki Kaisha Scanning lens system for a light beam scanning device
GB2212292A (en) * 1987-11-06 1989-07-19 Asahi Optical Co Ltd Scanning optical system for use in laser beam printer
US4850663A (en) * 1986-04-11 1989-07-25 Matsushita Electric Industrial Co., Ltd. Light scanning system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934512A (en) * 1982-08-23 1984-02-24 Canon Inc Optical scanning system with temperature compensation effect
JPS6159311A (en) * 1984-08-30 1986-03-26 Fujitsu Ltd Optical equipment for laser printer
US4731623A (en) * 1985-09-30 1988-03-15 Kabushiki Kaisha Toshiba Image formation device
US4866459A (en) * 1987-02-27 1989-09-12 Kabushiki Kaisha Toshiba Image scanner with a non-spherical fθ lens system
JP2712029B2 (en) * 1987-12-21 1998-02-10 キヤノン株式会社 Scanning optical device
JPH01315718A (en) * 1988-02-24 1989-12-20 Bando Chem Ind Ltd Scanning optical system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3228221A1 (en) * 1981-07-28 1983-04-14 Sharp K.K., Osaka DEVICE FOR RECORDING THE INFORMATION CONTENT OF AN ELECTRICAL SIGNAL ON THE SURFACE OF A LIGHT-SENSITIVE MEDIUM
DE3445342A1 (en) * 1983-12-12 1985-06-20 Asahi Kogaku Kogyo K.K., Tokio/Tokyo Laser beam exposing system
US4850663A (en) * 1986-04-11 1989-07-25 Matsushita Electric Industrial Co., Ltd. Light scanning system
US4786151A (en) * 1987-01-12 1988-11-22 Minolta Camera Kabushiki Kaisha Scanning lens system for a light beam scanning device
GB2212292A (en) * 1987-11-06 1989-07-19 Asahi Optical Co Ltd Scanning optical system for use in laser beam printer

Also Published As

Publication number Publication date
EP0415236A2 (en) 1991-03-06
EP0415236B1 (en) 1995-01-11
JP2928552B2 (en) 1999-08-03
DE69015925D1 (en) 1995-02-23
DE69015925T2 (en) 1995-07-06
US5064260A (en) 1991-11-12
JPH0387812A (en) 1991-04-12

Similar Documents

Publication Publication Date Title
GB2239717B (en) Laser beam level instrument
GB9000067D0 (en) Laser beam machine
GB9210679D0 (en) Laser beam printer
EP0427229A3 (en) Laser
EP0420124A3 (en) Optical unit for use in laser beam printer or the like
EP0412037A3 (en) Multiple laser beam scanning optics
EP0415236A3 (en) Optical unit for use in laser beam printer or the like
EP0444949A3 (en) Three micron laser
GB2257093B (en) Laser beam printer
GB8926574D0 (en) Laser interferometer
GB2212292B (en) Scanning optical system for use in laser beam printer
EP0431603A3 (en) Optical unit for use in laser beam printer or the like
IL96089A0 (en) Electronically pulsed laser system
GB8816423D0 (en) Excimer laser beam monogenizer system
GB2236426B (en) Laser source
EP0383942A4 (en) Laser beam relay unit
GB2243262B (en) Laser beam printer
GB8909711D0 (en) Optical beam steering device
AU120458S (en) Laser beam printer
EP0415234A3 (en) Optical unit for use in laser beam printer or the like
GB2279338B (en) Laser beam printer
EP0468117A3 (en) Laser beam machining device
EP0475169A3 (en) Laser beam device for vehicles
EP0487041A3 (en) Laser beam printer
GB9010982D0 (en) Pulsed laser

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900918

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19930915

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69015925

Country of ref document: DE

Date of ref document: 19950223

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970901

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980812

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980814

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990821

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990821

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000428

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST